Plugging the Pi Day Challenge, an online puzzle math quest all about pi created by my high school math teacher, Mr. Plummer (aka Plum). He’s been updating it with new puzzles for the past 15 years with the only goal of getting students excited about math.

It requires a login to save your progress which I know a lot of people dislike here… but it’s worth checking out: https://www.pidaychallenge.com/